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Backmixing in multistage agitated contactors‐‐‐a correlation
Author(s) -
Haug H. F.
Publication year - 1971
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690170319
Subject(s) - impeller , contactor , mechanics , flow (mathematics) , phase (matter) , backflow , chemistry , chromatography , materials science , mathematics , thermodynamics , physics , engineering , mechanical engineering , inlet , power (physics) , organic chemistry
A generalized correlation is presented for the backmix ratio in multistage agitated contactors. The backmix ratio is shown to be a function of the ratio of impeller tip speed to superficial flow velocity, and of the column configuration and impeller design. For single‐phase flow and for the continuous phase in two‐phase flow, the following expression is recommended:\documentclass{article}\pagestyle{empty}\begin{document}$$\alpha = 0.0098\left[ {\varepsilon \frac{{ND}}{u}\left( {\frac{{D^2 a}}{{THA}}} \right)^{1/2} } \right]^{1.2}$$\end{document}